Added and implemented HttpStream::GetTotalSentBytes for basic streams.

net/http/proxy_connect_redirect_http_stream.h

Index: net/http/proxy_connect_redirect_http_stream.h
diff --git a/net/http/proxy_connect_redirect_http_stream.h b/net/http/proxy_connect_redirect_http_stream.h
index 701d18d425a0be30f8fc081793024b3871c405c3..251a21af7b75296f8cdb2e20d02a4b3712ee2cf0 100644
--- a/net/http/proxy_connect_redirect_http_stream.h
+++ b/net/http/proxy_connect_redirect_http_stream.h
@@ -5,6 +5,8 @@
 #ifndef NET_HTTP_PROXY_CONNECT_REDIRECT_HTTP_STREAM_H_
 #define NET_HTTP_PROXY_CONNECT_REDIRECT_HTTP_STREAM_H_
 
+#include <stdint.h>
+
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/base/load_timing_info.h"
@@ -50,6 +52,7 @@ class ProxyConnectRedirectHttpStream : public HttpStream {
   bool IsConnectionReusable() const override;
 
   int64 GetTotalReceivedBytes() const override;
+  int64_t GetTotalSentBytes() const override;
 
   // This function may be called.
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override;